All tricks aside, shooting “Birdman’s” long takes left Norton distressed about being “that guy” who goes and ruins it for everyone with a mistake.

“You know what’s the worst?” Norton told Kimmel. “If there’s something really, really long and great actors like Michael Keaton and Zach Galifianakis and Naomi Watts have done great bits across like a long, 15 minute thing and your only bit is to like come in and say one thing at the end – that’s terrifying because then you’re risking everyone else’s good stuff.”